#define STDIN_BUF "I"
#define STDOUT_BUF "O"
#define STDERR_BUF "E"
#define LINE_BUF "L"
#define NO_BUF "0" /* invalid for STDIN_BUF */

#define LIBSTDBUF_PATH "/usr/libexec/coreutils/libstdbuf.so"
#define STDBUF(stream, mode) \
    "_STDBUF_"stream"="mode
